SynapseBridge

Methods

DEFAULT_ADMIN_ROLE

function DEFAULT_ADMIN_ROLE() external view returns (bytes32)

Returns

Name	Type	Description
_0	bytes32	undefined

GOVERNANCE_ROLE

function GOVERNANCE_ROLE() external view returns (bytes32)

Returns

Name	Type	Description
_0	bytes32	undefined

NODEGROUP_ROLE

function NODEGROUP_ROLE() external view returns (bytes32)

Returns

Name	Type	Description
_0	bytes32	undefined

WETH_ADDRESS

function WETH_ADDRESS() external view returns (address payable)

Returns

Name	Type	Description
_0	address payable	undefined

addKappas

function addKappas(bytes32[] kappas) external nonpayable

Parameters

Name	Type	Description
kappas	bytes32[]	undefined

bridgeVersion

function bridgeVersion() external view returns (uint256)

Returns

Name	Type	Description
_0	uint256	undefined

chainGasAmount

function chainGasAmount() external view returns (uint256)

Returns

Name	Type	Description
_0	uint256	undefined

deposit

function deposit(address to, uint256 chainId, contract IERC20 token, uint256 amount) external nonpayable

Relays to nodes to transfers an ERC20 token cross-chain

Parameters

Name	Type	Description
to	address	address on other chain to bridge assets to
chainId	uint256	which chain to bridge assets onto
token	contract IERC20	ERC20 compatible token to deposit into the bridge
amount	uint256	Amount in native token decimals to transfer cross-chain pre-fees*

depositAndSwap

function depositAndSwap(address to, uint256 chainId, contract IERC20 token, uint256 amount, uint8 tokenIndexFrom, uint8 tokenIndexTo, uint256 minDy, uint256 deadline) external nonpayable

Relays to nodes to both transfer an ERC20 token cross-chain, and then have the nodes execute a swap through a liquidity pool on behalf of the user.

Parameters

Name	Type	Description
to	address	address on other chain to bridge assets to
chainId	uint256	which chain to bridge assets onto
token	contract IERC20	ERC20 compatible token to deposit into the bridge
amount	uint256	Amount in native token decimals to transfer cross-chain pre-fees
tokenIndexFrom	uint8	the token the user wants to swap from
tokenIndexTo	uint8	the token the user wants to swap to
minDy	uint256	the min amount the user would like to receive, or revert to only minting the SynERC20 token crosschain.
deadline	uint256	latest timestamp to accept this transaction*

getFeeBalance

function getFeeBalance(address tokenAddress) external view returns (uint256)

Parameters

Name	Type	Description
tokenAddress	address	undefined

Returns

Name	Type	Description
_0	uint256	undefined

getRoleAdmin

function getRoleAdmin(bytes32 role) external view returns (bytes32)

Returns the admin role that controls role. See {grantRole} and {revokeRole}. To change a role's admin, use {_setRoleAdmin}.

Parameters

Name	Type	Description
role	bytes32	undefined

Returns

Name	Type	Description
_0	bytes32	undefined

getRoleMember

function getRoleMember(bytes32 role, uint256 index) external view returns (address)

Returns one of the accounts that have role. index must be a value between 0 and {getRoleMemberCount}, non-inclusive. Role bearers are not sorted in any particular way, and their ordering may change at any point. WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure you perform all queries on the same block. See the following https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] for more information.

Parameters

Name	Type	Description
role	bytes32	undefined
index	uint256	undefined

Returns

Name	Type	Description
_0	address	undefined

getRoleMemberCount

function getRoleMemberCount(bytes32 role) external view returns (uint256)

Returns the number of accounts that have role. Can be used together with {getRoleMember} to enumerate all bearers of a role.

Parameters

Name	Type	Description
role	bytes32	undefined

Returns

Name	Type	Description
_0	uint256	undefined

grantRole

function grantRole(bytes32 role, address account) external nonpayable

Grants role to account. If account had not been already granted role, emits a {RoleGranted} event. Requirements: - the caller must have role's admin role.

Parameters

Name	Type	Description
role	bytes32	undefined
account	address	undefined

hasRole

function hasRole(bytes32 role, address account) external view returns (bool)

Returns true if account has been granted role.

Parameters

Name	Type	Description
role	bytes32	undefined
account	address	undefined

Returns

Name	Type	Description
_0	bool	undefined

initialize

function initialize() external nonpayable

kappaExists

function kappaExists(bytes32 kappa) external view returns (bool)

Parameters

Name	Type	Description
kappa	bytes32	undefined

Returns

Name	Type	Description
_0	bool	undefined

mint

function mint(address payable to, contract IERC20Mintable token, uint256 amount, uint256 fee, bytes32 kappa) external nonpayable

Nodes call this function to mint a SynERC20 (or any asset that the bridge is given minter access to). This is called by the nodes after a TokenDeposit event is emitted.

This means the SynapseBridge.sol contract must have minter access to the token attempting to be minted

Parameters

Name	Type	Description
to	address payable	address on other chain to redeem underlying assets to
token	contract IERC20Mintable	ERC20 compatible token to deposit into the bridge
amount	uint256	Amount in native token decimals to transfer cross-chain post-fees
fee	uint256	Amount in native token decimals to save to the contract as fees
kappa	bytes32	kappa*

mintAndSwap

function mintAndSwap(address payable to, contract IERC20Mintable token, uint256 amount, uint256 fee, contract ISwap pool, uint8 tokenIndexFrom, uint8 tokenIndexTo, uint256 minDy, uint256 deadline, bytes32 kappa) external nonpayable

Nodes call this function to mint a SynERC20 (or any asset that the bridge is given minter access to), and then attempt to swap the SynERC20 into the desired destination asset. This is called by the nodes after a TokenDepositAndSwap event is emitted.

This means the BridgeDeposit.sol contract must have minter access to the token attempting to be minted

Parameters

Name	Type	Description
to	address payable	address on other chain to redeem underlying assets to
token	contract IERC20Mintable	ERC20 compatible token to deposit into the bridge
amount	uint256	Amount in native token decimals to transfer cross-chain post-fees
fee	uint256	Amount in native token decimals to save to the contract as fees
pool	contract ISwap	Destination chain's pool to use to swap SynERC20 -> Asset. The nodes determine this by using PoolConfig.sol.
tokenIndexFrom	uint8	Index of the SynERC20 asset in the pool
tokenIndexTo	uint8	Index of the desired final asset
minDy	uint256	Minumum amount (in final asset decimals) that must be swapped for, otherwise the user will receive the SynERC20.
deadline	uint256	Epoch time of the deadline that the swap is allowed to be executed.
kappa	bytes32	kappa*

pause

function pause() external nonpayable

paused

function paused() external view returns (bool)

Returns true if the contract is paused, and false otherwise.

Returns

Name	Type	Description
_0	bool	undefined

redeem

function redeem(address to, uint256 chainId, contract ERC20Burnable token, uint256 amount) external nonpayable

Relays to nodes that (typically) a wrapped synAsset ERC20 token has been burned and the underlying needs to be redeeemed on the native chain

Parameters

Name	Type	Description
to	address	address on other chain to redeem underlying assets to
chainId	uint256	which underlying chain to bridge assets onto
token	contract ERC20Burnable	ERC20 compatible token to deposit into the bridge
amount	uint256	Amount in native token decimals to transfer cross-chain pre-fees*

redeemAndRemove

function redeemAndRemove(address to, uint256 chainId, contract ERC20Burnable token, uint256 amount, uint8 swapTokenIndex, uint256 swapMinAmount, uint256 swapDeadline) external nonpayable

Relays to nodes that (typically) a wrapped synAsset ERC20 token has been burned and the underlying needs to be redeeemed on the native chain. This function indicates to the nodes that they should attempt to redeem the LP token for the underlying assets (E.g "swap" out of the LP token)

Parameters

Name	Type	Description
to	address	address on other chain to redeem underlying assets to
chainId	uint256	which underlying chain to bridge assets onto
token	contract ERC20Burnable	ERC20 compatible token to deposit into the bridge
amount	uint256	Amount in native token decimals to transfer cross-chain pre-fees
swapTokenIndex	uint8	Specifies which of the underlying LP assets the nodes should attempt to redeem for
swapMinAmount	uint256	Specifies the minimum amount of the underlying asset needed for the nodes to execute the redeem/swap
swapDeadline	uint256	Specificies the deadline that the nodes are allowed to try to redeem/swap the LP token*

redeemAndSwap

function redeemAndSwap(address to, uint256 chainId, contract ERC20Burnable token, uint256 amount, uint8 tokenIndexFrom, uint8 tokenIndexTo, uint256 minDy, uint256 deadline) external nonpayable

Relays to nodes that (typically) a wrapped synAsset ERC20 token has been burned and the underlying needs to be redeeemed on the native chain. This function indicates to the nodes that they should attempt to redeem the LP token for the underlying assets (E.g "swap" out of the LP token)

Parameters

Name	Type	Description
to	address	address on other chain to redeem underlying assets to
chainId	uint256	which underlying chain to bridge assets onto
token	contract ERC20Burnable	ERC20 compatible token to deposit into the bridge
amount	uint256	Amount in native token decimals to transfer cross-chain pre-fees
tokenIndexFrom	uint8	the token the user wants to swap from
tokenIndexTo	uint8	the token the user wants to swap to
minDy	uint256	the min amount the user would like to receive, or revert to only minting the SynERC20 token crosschain.
deadline	uint256	latest timestamp to accept this transaction*

redeemV2

function redeemV2(bytes32 to, uint256 chainId, contract ERC20Burnable token, uint256 amount) external nonpayable

Relays to nodes that (typically) a wrapped synAsset ERC20 token has been burned and the underlying needs to be redeeemed on the native chain

Parameters

Name	Type	Description
to	bytes32	address on other chain to redeem underlying assets to
chainId	uint256	which underlying chain to bridge assets onto
token	contract ERC20Burnable	ERC20 compatible token to deposit into the bridge
amount	uint256	Amount in native token decimals to transfer cross-chain pre-fees*

renounceRole

function renounceRole(bytes32 role, address account) external nonpayable

Revokes role from the calling account. Roles are often managed via {grantRole} and {revokeRole}: this function's purpose is to provide a mechanism for accounts to lose their privileges if they are compromised (such as when a trusted device is misplaced). If the calling account had been granted role, emits a {RoleRevoked} event. Requirements: - the caller must be account.

Parameters

Name	Type	Description
role	bytes32	undefined
account	address	undefined

revokeRole

function revokeRole(bytes32 role, address account) external nonpayable

Revokes role from account. If account had been granted role, emits a {RoleRevoked} event. Requirements: - the caller must have role's admin role.

Parameters

Name	Type	Description
role	bytes32	undefined
account	address	undefined

setChainGasAmount

function setChainGasAmount(uint256 amount) external nonpayable

Parameters

Name	Type	Description
amount	uint256	undefined

setWethAddress

function setWethAddress(address payable _wethAddress) external nonpayable

Parameters

Name	Type	Description
_wethAddress	address payable	undefined

startBlockNumber

function startBlockNumber() external view returns (uint256)

Returns

Name	Type	Description
_0	uint256	undefined

unpause

function unpause() external nonpayable

withdraw

function withdraw(address to, contract IERC20 token, uint256 amount, uint256 fee, bytes32 kappa) external nonpayable

Function to be called by the node group to withdraw the underlying assets from the contract

Parameters

Name	Type	Description
to	address	address on chain to send underlying assets to
token	contract IERC20	ERC20 compatible token to withdraw from the bridge
amount	uint256	Amount in native token decimals to withdraw
fee	uint256	Amount in native token decimals to save to the contract as fees
kappa	bytes32	kappa*

withdrawAndRemove

function withdrawAndRemove(address to, contract IERC20 token, uint256 amount, uint256 fee, contract ISwap pool, uint8 swapTokenIndex, uint256 swapMinAmount, uint256 swapDeadline, bytes32 kappa) external nonpayable

Function to be called by the node group to withdraw the underlying assets from the contract

Parameters

Name	Type	Description
to	address	address on chain to send underlying assets to
token	contract IERC20	ERC20 compatible token to withdraw from the bridge
amount	uint256	Amount in native token decimals to withdraw
fee	uint256	Amount in native token decimals to save to the contract as fees
pool	contract ISwap	Destination chain's pool to use to swap SynERC20 -> Asset. The nodes determine this by using PoolConfig.sol.
swapTokenIndex	uint8	Specifies which of the underlying LP assets the nodes should attempt to redeem for
swapMinAmount	uint256	Specifies the minimum amount of the underlying asset needed for the nodes to execute the redeem/swap
swapDeadline	uint256	Specificies the deadline that the nodes are allowed to try to redeem/swap the LP token
kappa	bytes32	kappa*

withdrawFees

function withdrawFees(contract IERC20 token, address to) external nonpayable

withdraw specified ERC20 token fees to a given address

Parameters

Name	Type	Description
token	contract IERC20	ERC20 token in which fees acccumulated to transfer
to	address	Address to send the fees to

Events

Paused

event Paused(address account)

Parameters

Name	Type	Description
account	address	undefined

RoleAdminChanged

event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole)

Parameters

Name	Type	Description
role indexed	bytes32	undefined
previousAdminRole indexed	bytes32	undefined
newAdminRole indexed	bytes32	undefined

RoleGranted

event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender)

Parameters

Name	Type	Description
role indexed	bytes32	undefined
account indexed	address	undefined
sender indexed	address	undefined

RoleRevoked

event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender)

Parameters

Name	Type	Description
role indexed	bytes32	undefined
account indexed	address	undefined
sender indexed	address	undefined

TokenDeposit

event TokenDeposit(address indexed to, uint256 chainId, contract IERC20 token, uint256 amount)

Parameters

Name	Type	Description
to indexed	address	undefined
chainId	uint256	undefined
token	contract IERC20	undefined
amount	uint256	undefined

TokenDepositAndSwap

event TokenDepositAndSwap(address indexed to, uint256 chainId, contract IERC20 token, uint256 amount, uint8 tokenIndexFrom, uint8 tokenIndexTo, uint256 minDy, uint256 deadline)

Parameters

Name	Type	Description
to indexed	address	undefined
chainId	uint256	undefined
token	contract IERC20	undefined
amount	uint256	undefined
tokenIndexFrom	uint8	undefined
tokenIndexTo	uint8	undefined
minDy	uint256	undefined
deadline	uint256	undefined

TokenMint

event TokenMint(address indexed to, contract IERC20Mintable token, uint256 amount, uint256 fee, bytes32 indexed kappa)

Parameters

Name	Type	Description
to indexed	address	undefined
token	contract IERC20Mintable	undefined
amount	uint256	undefined
fee	uint256	undefined
kappa indexed	bytes32	undefined

TokenMintAndSwap

event TokenMintAndSwap(address indexed to, contract IERC20Mintable token, uint256 amount, uint256 fee, uint8 tokenIndexFrom, uint8 tokenIndexTo, uint256 minDy, uint256 deadline, bool swapSuccess, bytes32 indexed kappa)

Parameters

Name	Type	Description
to indexed	address	undefined
token	contract IERC20Mintable	undefined
amount	uint256	undefined
fee	uint256	undefined
tokenIndexFrom	uint8	undefined
tokenIndexTo	uint8	undefined
minDy	uint256	undefined
deadline	uint256	undefined
swapSuccess	bool	undefined
kappa indexed	bytes32	undefined

TokenRedeem

event TokenRedeem(address indexed to, uint256 chainId, contract IERC20 token, uint256 amount)

Parameters

Name	Type	Description
to indexed	address	undefined
chainId	uint256	undefined
token	contract IERC20	undefined
amount	uint256	undefined

TokenRedeemAndRemove

event TokenRedeemAndRemove(address indexed to, uint256 chainId, contract IERC20 token, uint256 amount, uint8 swapTokenIndex, uint256 swapMinAmount, uint256 swapDeadline)

Parameters

Name	Type	Description
to indexed	address	undefined
chainId	uint256	undefined
token	contract IERC20	undefined
amount	uint256	undefined
swapTokenIndex	uint8	undefined
swapMinAmount	uint256	undefined
swapDeadline	uint256	undefined

TokenRedeemAndSwap

event TokenRedeemAndSwap(address indexed to, uint256 chainId, contract IERC20 token, uint256 amount, uint8 tokenIndexFrom, uint8 tokenIndexTo, uint256 minDy, uint256 deadline)

Parameters

Name	Type	Description
to indexed	address	undefined
chainId	uint256	undefined
token	contract IERC20	undefined
amount	uint256	undefined
tokenIndexFrom	uint8	undefined
tokenIndexTo	uint8	undefined
minDy	uint256	undefined
deadline	uint256	undefined

TokenRedeemV2

event TokenRedeemV2(bytes32 indexed to, uint256 chainId, contract IERC20 token, uint256 amount)

Parameters

Name	Type	Description
to indexed	bytes32	undefined
chainId	uint256	undefined
token	contract IERC20	undefined
amount	uint256	undefined

TokenWithdraw

event TokenWithdraw(address indexed to, contract IERC20 token, uint256 amount, uint256 fee, bytes32 indexed kappa)

Parameters

Name	Type	Description
to indexed	address	undefined
token	contract IERC20	undefined
amount	uint256	undefined
fee	uint256	undefined
kappa indexed	bytes32	undefined

TokenWithdrawAndRemove

event TokenWithdrawAndRemove(address indexed to, contract IERC20 token, uint256 amount, uint256 fee, uint8 swapTokenIndex, uint256 swapMinAmount, uint256 swapDeadline, bool swapSuccess, bytes32 indexed kappa)

Parameters

Name	Type	Description
to indexed	address	undefined
token	contract IERC20	undefined
amount	uint256	undefined
fee	uint256	undefined
swapTokenIndex	uint8	undefined
swapMinAmount	uint256	undefined
swapDeadline	uint256	undefined
swapSuccess	bool	undefined
kappa indexed	bytes32	undefined

Unpaused

event Unpaused(address account)

Parameters

Name	Type	Description
account	address	undefined